diff --git a/MEV_on_Ethereum/eip-1559.md b/MEV_on_Ethereum/eip-1559.md
index fb84602..12cc287 100644
--- a/MEV_on_Ethereum/eip-1559.md
+++ b/MEV_on_Ethereum/eip-1559.md
@@ -1,4 +1,7 @@
-## 🍩 mev and eip-1559
+## mev and eip-1559
+
+
+### tl; dr
 
 <br>
 
@@ -6,26 +9,6 @@
 
   <br>
   
-##### dune query  
-  
-```
-SELECT
-  DATE_TRUNC('month',block_time) AS month,
-  -- For every month, Compute Number of eip 1559 transactions / Total transactions
-  COUNT(*) FILTER ( WHERE `type` = 'DynamicFee') / COUNT(*) AS eip1559_tx,
-  COUNT(*) FILTER ( WHERE `type` = 'Legacy' ) / COUNT(*) AS legacy_tx,
-  COUNT(*) FILTER ( WHERE `type` NOT IN ('DynamicFee', 'Legacy') ) / COUNT(*) AS other_tx
-FROM
-  ethereum.transactions
-WHERE
-  block_number >= 12965000 --London upgrade block number
-GROUP BY
-  month  
-```
-  
-  
-<br>
-
 
 
 - The incorporation of EIP-1559 in the London hardfork brought a major restructuring of the Ethereum fee mechanism, aiming to allow for easier 
@@ -49,6 +32,113 @@ protection in some DEXes, where miner fees are taken directly from the transferr
 
 
 
+<br>
+
+---
+
+### dune queries 
+  
+#### eip-1559 adoption  
+  
+```
+SELECT
+  DATE_TRUNC('month',block_time) AS month,
+  COUNT(*) FILTER ( WHERE `type` = 'DynamicFee') / COUNT(*) AS eip1559_tx,
+  COUNT(*) FILTER ( WHERE `type` = 'Legacy' ) / COUNT(*) AS legacy_tx,
+  COUNT(*) FILTER ( WHERE `type` NOT IN ('DynamicFee', 'Legacy') ) / COUNT(*) AS other_tx
+FROM
+  ethereum.transactions
+WHERE
+  block_number >= 12965000 --London upgrade block number
+GROUP BY
+  month  
+```
+  
+<br>
+
+#### split base fee / priority fee
+
+```
+SELECT
+  DATE_TRUNC('month', tx.block_time) AS month,
+  SUM(
+    CASE
+      WHEN tx.block_number < 12965000 THEN tx.gas_used * tx.gas_price/1e18
+      ELSE tx.gas_used * tx.priority_fee_per_gas/1e18
+    END
+  ) as fees_miner_eth,
+  SUM(tx.gas_used * blk.base_fee_per_gas/1e18) AS fees_burnt_eth
+FROM
+  ethereum.transactions tx
+  INNER JOIN ethereum.blocks blk ON tx.block_number = blk.number
+WHERE
+  tx.block_time >= '2021-01-01'
+GROUP BY
+  month;
+
+```
+  
+  
+<br>
+
+#### price impact
+
+```
+SELECT
+  DATE_TRUNC('month', block_time) as month,
+  PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY gas_price)/1e9 as median_gas_price 
+FROM
+  ethereum.transactions
+WHERE
+  DATE(block_time)>= '2021-01-01'
+GROUP BY
+  month
+````
+
+<br>
+
+#### gas volatility
+
+```
+WITH blocks_iqr_gas AS (
+    SELECT 
+    block_number,
+    ((PERCENTILE_CONT(0.75) WITHIN GROUP (ORDER BY gas_price)) - (PERCENTILE_CONT(0.25) WITHIN GROUP (ORDER BY gas_price))) / PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY gas_price) AS iqr_gas 
+    FROM ethereum.transactions 
+    WHERE DATE(block_time)>= '2021-01-01'
+    GROUP BY block_number
+)
+--Compute the median of IQR for every month
+SELECT DATE_TRUNC('month', time) AS month,
+PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY iqr_gas) AS median_gas_volatility
+FROM blocks_iqr_gas blk_iqr
+INNER JOIN ethereum.blocks blk
+ON blk_iqr.block_number = blk.number
+GROUP BY month;
+
+```
+
+<br>
+
+#### tx gas limits (looking at traces)
+
+```
+SELECT
+  block_number,
+  tx_hash,
+  error,
+  'https://etherscan.io/tx/' || tx_hash AS etherscan_tx_link,
+  'https://etherscan.io/vmtrace?txhash=' || tx_hash || '&type=gethtrace2' AS etherscan_trace_link
+FROM
+  ethereum.traces
+WHERE
+  error = "Out of gas"
+AND block_time > NOW() - INTERVAL '1 hour'
+ORDER BY block_time DESC
+LIMIT 10;
+```
+
+
 <br>
   
 ----